Rate-Splitting Multiple Access for Satellite-Terrestrial Integrated Networks:Benefits of Coordination and Cooperation

Li, Yin; Clerckx, Bruno

doi:10.48550/arxiv.2111.14074

Cited by 2 publications

(2 citation statements)

References 40 publications

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“…To further guarantee seamless and ubiquitous service, integrated terrestrial-satellite networks have been proposed and are a promising approach. RSMA has been studied in [131], [193], [195] for integrated terrestrial-satellite networks, where RSMA is shown to achieve significant sum-rate, secrecy rate, and EE gains over conventional MU-LP.…”

Section: ) Simultaneous Wireless Information and Power Transfer (Swipt)mentioning

confidence: 99%

Rate-Splitting Multiple Access: Fundamentals, Survey, and Future Research Trends

Mao,

Dizdar,

Clerckx

et al. 2022

Preprint

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Rate-splitting multiple access (RSMA) has emerged as a novel, general, and powerful framework for the design and optimization of non-orthogonal transmission, multiple access (MA), and interference management strategies for future wireless networks. By exploiting splitting of user messages as well as non-orthogonal transmission of common messages decoded by multiple users and private messages decoded by their corresponding users, RSMA can softly bridge and therefore reconcile the two extreme interference management strategies of fully decoding interference and treating interference as noise. RSMA has been shown to generalize and subsume as special cases four existing MA schemes, namely, orthogonal multiple access (OMA), physical-layer multicasting, space division multiple access (SDMA) based on linear precoding (currently used in the fifth generation wireless network-5G), and non-orthogonal multiple access (NOMA) based on linearly precoded superposition coding with successive interference cancellation (SIC). Through information and communication theoretic analysis, RSMA has been shown to be optimal (from a Degrees-of-Freedom region perspective) in several transmission scenarios. Compared to the conventional MA strategies used in 5G, RSMA enables spectral efficiency (SE), energy efficiency (EE), coverage, user fairness, reliability, and quality of service (QoS) enhancements for a wide range of network loads (including both underloaded and overloaded regimes) and user channel conditions. Furthermore, it enjoys a higher robustness against imperfect channel state information at the transmitter (CSIT) and entails lower feedback overhead and complexity. Despite its great potential to fundamentally change the physical (PHY) layer and media access control (MAC) layer of wireless communication networks, RSMA is still confronted with many challenges on the road towards standardization. In this paper, we present the first comprehensive tutorial on RSMA by providing a survey of the pertinent state-ofthe-art research, detailing its architecture, taxonomy, and various appealing applications, as well as comparing with existing MA schemes in terms of their overall frameworks, performance, and complexities. An in-depth discussion of future RSMA research challenges is also provided to inspire future research on RSMAaided wireless communication for beyond 5G systems.

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Section: ) Simultaneous Wireless Information and Power Transfer (Swipt)mentioning

confidence: 99%

Rate-Splitting Multiple Access: Fundamentals, Survey, and Future Research Trends

Mao,

Dizdar,

Clerckx

et al. 2022

Preprint

Self Cite

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“…Compared with satellites and terrestrial BSs, UAVs enjoy much higher mobility, ease of deployment, and may act as aerial ISAC platforms, relays or sensing targets, which present great compatibility with the SAGIN to enhance ISAC services [1]. Note that RSMA has been demonstrated to be very promising for satelliteterrestrial/aerial integrated networks [21], [22] and satellite ISAC systems [9] due to its powerful interference management capability. Hence, the interplay between RSMA-assisted ISAC and SAGIN is worth being investigated.…”

Section: B Rsma-assisted Isac With Saginmentioning

confidence: 99%

Rate-Splitting Multiple Access for 6G -- Part II: Interplay with Integrated Sensing and Communications

Li¹,

Mao²,

Dizdar³

et al. 2022

Preprint

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This letter is the second part of a three-part tutorial focusing on rate-splitting multiple access (RSMA) for 6G. As Part II of the tutorial, this letter addresses the interplay between RSMA and integrated radar sensing and communications (ISAC). In particular, we introduce a general RSMAassisted ISAC architecture, where the ISAC platform has a dual capability to simultaneously communicate with downlink users and probe detection signals to a moving target. Then, the metrics of radar sensing and communications are respectively introduced, followed by a RSMA-assisted ISAC waveform design example which jointly minimizes the Cramér-Rao bound (CRB) of target estimation and maximizes the minimum fairness rate (MFR) amongst communication users subject to the per-antenna power constraint. The superiority of RSMA-assisted ISAC is verified through simulation results in both terrestrial and satellite scenarios. RSMA is demonstrated to be a powerful multiple access and interference management strategy for ISAC, and provides a better communication-sensing trade-off compared with the conventional benchmark strategies. Consequently, RSMA is a promising technology for next generation multiple access (NGMA) and future networks such as 6G and beyond.

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Rate-Splitting Multiple Access for Satellite-Terrestrial Integrated Networks:Benefits of Coordination and Cooperation

Cited by 2 publications

References 40 publications

Rate-Splitting Multiple Access: Fundamentals, Survey, and Future Research Trends

Rate-Splitting Multiple Access: Fundamentals, Survey, and Future Research Trends

Rate-Splitting Multiple Access for 6G -- Part II: Interplay with Integrated Sensing and Communications

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